View.OnKeyListener

android.view.View.OnKeyListener

Class Overview

Interface definition for a callback to be invoked when a hardware key event is
dispatched to this view. The callback will be invoked before the key event is
given to the view. This is only useful for hardware keyboards; a software input
method has no obligation to trigger this listener.

Public Methods

Called when a hardware key is dispatched to a view. This allows listeners to
get a chance to respond before the target view.

Key presses in software keyboards will generally NOT trigger this method,
although some may elect to do so in some situations. Do not assume a
software input method has to be key-based; even if it is, it may use key presses
in a different way than you expect, so there is no way to reliably catch soft
input key presses.